Web-tension mechanism



p, J.-sc Qfr WEB TENSION MECHANISM Dec. 1 1926. I 1,610,713

Fi ed Oct. 2. 1924 :s sheets-sheet 1 Dec. 14, 1926. 1,610,713

D. J. SCOTT WEB TENSION MECHANISM Filed Oct. 2. 19 24 a Sheets-Sheet s 30 combination of Patented Dec. 14', 1926.

- UNITED-STATES 1,510,713 .PA'nEnl OFFiCE.

DAVID J. SCOTT, F PLAINFIELD, JERSEY.

wan-mansion -mncnknism.{

Application filed'October 2,1924. Serial No. 741,098'.

This inventidn relates to web tension mechanism for rolls of paper used in print+ ing or pther machines.

If is customary in the art, at the present t1me, when a feeding Web becomes slackto increase the braking action on the web roller andfconversely, when the web becomes taut to decrease the braking action on the webroll. Su'ch devices are shown in the Letters Patent /to Scott No. 558,426 of April 14, 1896, and in the Letters Patent to Jones No. 1,395,830 of Nov. '1, 1921. It is also customary in the art to provide means whereby when a roll-feeding a web of paper is about to become exhausted to automatically move another roll into position and to paste a new web to the one thatjis about to become ex-- hausted thereby replenishing the paper sup.- ply.' A device of this character is shown in replenishing device suchas shown in the Stone patent.

Accordingly the invention consists of thehereinafter described arrangement ofparts,

elements and features of con- "struction.

In 'the accompanying drawings the in vention is disclosed in a concrete and now preferred form in whichsupporting pedeetals"being removed and with parts in section; The printing 'machine or other take-up device is shown diagrammatically, and is of the type -in=which the web is fed from beneath the machine. Fig. 2 is an end elevation'lookinlg iii the .directionof arrow 2 of Fig. 1- with parts in section.

Fig. 3 is a fragmentary side elevation of the rotatable web-supporting means, loolring at the top of Fig. 4:. I

Fig. 4 is aview, partly in section, looking iil' the direction of arrow {of Fig. 3.

Fig'l' 5 is side elevation of the actuator, for "thebrake mechanisms, and adjacent elements? Fig; 6-is an end flevation of the parts shown in "Fig;- 5 look arrow 6 of Figi5.

the patent to Stone No. 1,124 73 of an. 12,

' character shown in the Scott or Jones pat-- ents to an automatic, or semi-automatic,

- occupied'byrOlI 11. F ig. lis a sideelevation looking in the 1 direction of arrow 1- of Fig-2, one of the ng in the direction of 1 indicates a printing machine of any suitable construction vhavinga bed plate 2 in the usual manner. 9,10 and 11 indicate a plurality of web rolls which are successively rought into feeding position with respect to the printing'machine beinghere carried by a rotatable supporting means consisting of shaft 4, mounted in pedestals 3, and two spiders 5 and 6, each of which spiders has three arms, there being a, capped journal 7 at the end of each arm for removably holding a paper roll spindle 8. The roll 9 is shown in feeding position and the web 14, being the feeding; web passing to the printing-machine, is shown in two positions to indicate the maximum and minimum diam- 'cessive web rolls into feeding position; and

' it will be Tiinderstood that if" paste be a plied to substitute or replenishing roll 10 an then,

while'the press is being run atslowspeed, the supporting means for the web rolls, be rotated clockwise, in Fig. 1, roll 10. (beingv rotated slowly by hand) will'come. in contact with web 14.- and 10 and 14 may then be pastedtogethen As soon as the two webs are joined, the web from roll 9 may be brokenand roll 10 then moved into the positionpreviously occupied by roll 9, and the empty spindle from roll 9 may be taken out and a fresh'joll put in while in the position Suitable contpolling mechanism, governed b the tension of the feeding web and suita fe brakemechanism for the web rolls' are provided. Preferably, the construction; is, such that the brake mechanism relating solely to the roll in feeding position is affected by the controlling means, and also, preferably, the parts are so arranged that the movement of a new rol into feeding position will not merely bring the parts into such relation that the controlling mechanism and the brake mechanism -may coact when coupled up, but the parts become automatically coupled or related so, that no additional work, such asxlatching two parts together, is necessary. Preferably, the controlling mechanism mounted i dependently of the supporting means for t e web rolls consists disposed with respect to the web rolls.

brake pulley to pro uce more or less brak-,

ing effect. The tension straps 13, in addition to the usual hand screw adjustment, are

' mounted insuch manner that the ends of the straps opposite the hand wheel adjustment are also movable to increase or decrease the wrap of the brake shoes by means of toggle 37 with the. usual toggle connections. This toggle 37 has a brake rod 38 sliding through a bracket 39 and ending in an adjusting screw which is in position to be adjustable bysliding closer to and further "roller.

7 acted on by cam 36 on sliding collar 35,

The controlling mechanism is here con-' structed as follows:

Gain 36 and sliding collar 35 constitute anactuating member centrally disposed with respect to the web rolls. The sliding collar is carried loosely on shaft 4, is adjustable lengthwise thereof, and is prevented from rotating by means of pin 43 extending into pedestal 3. Cam 36 is so shaped as to be active with respect to the brake rod of the web roll in feeding-position. j

Side register of the web can be obtained in the usual manner, either by shifting one of the pedestals .3 sidewise and with itthe shaft 4 and all that it carries, or shaft/1. may be mounted to slide back and forth to side register. the webs; or, if preferred, each web can beside registered individually by moving the paper-roll spindle sideways, such as is usually done on floor fed newspaper pr 'esses' and is common practice in the art.

eb 14 runs to spring roller ljwhich is of the ordinary construction and provides some yield to the variations in the winding of the various rolls\of paper. From this roller, the web passes underneath the automatic tension-adjusting roll.16 and from there on to press roller 17 and thence into the press. Tensionadjusting roller 16 is carried by arms 18 on shaft 19 which is pivoted in the frame or bracket 20. On shaft 19 there is bracket 21 carrying extension r0d'22 and balance we ght 23. which balance weight is from the shaft 19 and this counter-balances the weightof the roller 16 and arms 18. Carried also by shaft 19, isthe lever 24 connecting with dash ot 25 which ma be an air or oil checking evice to steady-t e travel of the web-tension roller 16 and to prevent violent andicontinuo'us vibration of the There is also carried on shaft 19, adjusting lever 26 carrying a roll 27 that operates on crank lever 28. This crank lever is pivoted to frame20 at point 29.

of crank lever 28, while to the other end there is pivoted connecting rod 31 reaching to bell crank 32 which is forked at the lower end and ends in shoes 33 operating in groove 34 of sliding collar 35.

The operation of the device is as follows: When starting the press, the operator screws down the hand tension until the correct web tension-is obtained and he then adjusts the sliding Weight 23 so that, with this tension adjustmen't,'arm 16 will be in a horizontal position ready to move up or down as far as necessary. Also, he then adjusts roll 27 on arm 28 so as to bring sliding collar-35 and cam face 36 in the middle of its movement and he adjusts screwAO in connecting rod 38 so that the adjustment of toggle 37 is in the center of' its position. In other words, all, the adjustments are set midway ready to increase or decrease the amount of tension, and the control isentirely by means of roller 16. If for any reason the tension is increased, such as .in speeding up the press or through uneven winding of the paper, or if the bearing friction on the spindle increases excessively, roller 16 will lift thereby allowing the spring end of lever 28 to raise which depresses connecting rod 31 and through itsconnections shifts cam face 36 outwardly thus -releasin pressure on screw 40 and connecting ro 38, which in turn releases toggle 37 and reduces the friction on the brake pulley. On the other hand, if the tension should become so loose, or thepress slowed down to such extent, that the paper feed is at greater speed than the press speed, roller 16 drops thereby re- \fe'rsing the action and putting on more tension. It will therefore be seen that by setting. the balance weight in roper position and adjustin the tension la Y hand until roller 16 stands in the middle of its motion, each successive roll of paper may be run off under the same tension and will also have its tension. automatically adjusted. It is also to be noted that by reason of cam 36 being on a sector onl of sliding collar 35, it is effective only on t e roll that is in running posit-ion and has no effect whatever on the substitute rolls that are waiting to be run off in turn. f

I claim:

1. A tension device for web rolls including: means for bringing web rolls, one at a time, into feeding position, controlling mechanism governed by the tension of the web from the roll in feeding position, and brake mechanism forsaid rolls to coact with said controlling mechanism. P

2. A tension device for web rolls including: means for bringing web rolls, one at a time, into feeding position, controlling mechanism governed by the tension of the web from the roll in feeding position, and brake mechanism for said rolls,--'inovable-with said means, to -coact with said controlling mechani sm. 4 4-. A tension device for webrolls includ mechanism.

web from the roll in feeding position, and a plurality of brake mechanisms, one for said controlling a each roll, to coact with ing: means for bringing web rolls, one at a time, into feeding position, controlling. mechanism governed bythe'tension of the J web from the roll in feeding position, and

a plurality of brake mechanisms, one for each roll, movable with said'means', to coact v -with said controlling mechanism.

with said controlling mechanism.

7 trolling mecha 'sm.

5. A tension device for web rolls including: means forbringing web rolls, one at time, into feeding position, controlling mechanism governed by the tension ofthe \veb from the roll in feeding position,.and

a plurality of brake mechanisms, one for each roll movable with said means, to coact with said controlling mechanism as each roll comes into feeding position.

6. A tension device for web 'rolls including: means for bringing 'web rolls, one at a time, into feeding position, controlling mechanism, mounted independently 'of the movement ofsaid means, governed by the tension: of the web in feeding/position, and brake mechanism for said rolls to coact with said controlling mechanism.

7. .A tension device for web rolls including: means for bringing web". rolls, one. at a time, into feeding position, controlling mechanism, mounted'independently of the movement of said means, governed by the tension of the web in feeding position, and brake mechanism for said rolls, movablewith (said means, to coact with; said con- 8. A tension device for web rolls including:.means for 'bringing web rolls, one at a time, into feeding position, controlling mechanism, mounted independently of the movement of said means, governed by the tension of the web in-feedi'ng position, and

a plurality bf brake mechanisms, one for eachroll," to coactwith said controlling me anisms. L 9. A tension device for webrolls including: means. for bringing web rolls, one ata time, into feeding position, controlling mechanism,- mounted independently of the movement of said means, governed by the tension of the web in feeding position, and a plurality of brake mechanisms, one for each roll, movabl'e with said means, to coact ,L 10; A tension device for web rolls including: means for bringing web rolls, one at a time, into: feeding position, controlling;

automatically becoming operatively related to 'said controlling mechanism as the roll ing:

mechanism, mounted independently of the movement of said means, governed by the tension of the web in feeding position, and a plurality of brake mechanisms, one for each roll, movable with said-means, to coact with said controlling mechanism as each roll comes into feeding position.

, 1,1, A tension device for web rolls including: means for bringing web rolls, one at time, into feeding position, controlling mechanismgoverned by the tension of the web from the roll in feedingposition, and

brake mechanism for said 'rolls to automatically become operatively related to said controlling mechanism as each roll comes into feeding position. I 12. Ar tension device for web rolls including: means for bringing web rolls, one at a time, into feeding position, controlling mechanism governed by the tension of the web from the roll-in feeding position, and

brake mechanism for said rolls, movable with sai operative y related to said controlling mechanism as each roll comes,into feeding position.

means, to automatically become 13. A tension device for web rolls incl'udf a "time, into feeding position, controlling ing: means for bringing web rolls, one at 'a plurality of brake mechanisms, one for each roll, the 'brake' mechanism of" a roll web from the roll infeeding position, and" a ilurality of brake mechanisms, one for eac roll, movable with said means, the

brake mechanism of a roll automatically becomingoperatively related to saidcontrolling mechanism as the roll comes into feed-' ingposition.

mechanism, mounted independently: of the movement of said means; governed by the tension of the web in feeding position, and.

15. A tension device for web rolls including: means for bringing web rolls, one at; a time, into feeding position, controlllng 14. Atension device for web rolls includbrake mechanisms for said rolls to automatically become operatively related to said controlling mechanism as each roll comes into feeding position.

16. A tension device for web rolls including means for bringmg web. rolls, one at .a time, Into feeding position, controlling mechanism, mounted independently of the tension of the web in feeding position, and brake mechanisms \for said rolls, movable with said means, to automatically become movement of said means, governed by the ing: means for.bringing web operativelyrelated to said controlling mech-.

a plurality of brake mechanisms, one foreach roll, the brake mechanism of a roll automatically becoming operatively related to said controlling mechanism as the roll comes into feeding position.

18. A tension device for web rolls including: means for bringing web rolls, one at a time, into feeding position, controlling mechanism, mounted independently of the movement of said means, tension of the web in feeding position, and a plurality of brake mechanisms, one for each roll, movable with said means, the brake mechanism. of a roll automatically becoming operatively related to said controlling mechanism as the roll comes into feeding position. v

19. A tension device for web rolls including: means for bringing web rolls, one at a time, into feeding position, a plurality of brake mechanisms, one for .each roll, and controlling mechanism governed. by the ten sion of the web fromthe roll in feeding position to control the brake mechanism of the roll in feeding position.

20. A tension device for web rolls including: means for bringing web rolls, one at a time, into feeding position, a plurality of brake mechanisms, one for each roll, and controlling mechanism governed by the tension of the web from the roll in feeding position to successively control the brake mechanism of each roll as it comes into feeding position.

21. A tension device for web rolls includrolls, one at a time,'into feeding position, aplurality of brake mechanisms, one for each roll, and controlling mechanism governed by .the tension of. the web from the roll in feeding position to automatically become opergatively related to the brake mechanism of successive rolls as they come into feeding position.

22. A tension device for Web rolls including: supporting means for a plurality of web rolls to successively move said rolls into feeding position, controlling vmechanism governedby the tension of the web from the roll in feeding position, and brake mechanism for the rolls movable into and out of operativerelation with the controlling mechanism by movement of the supporting means.

23: A tension device for Web rolls including: supporting means for a plurality-of web rolls to successively move said rolls'into feeding position, controlling mechanifiin governed by the governed by the tension of the roll in feeding position, and a plurality of brake mechanisms, one for each roll, movable into and out of operative relation with the controlling mechanism by'movement o the supporting means. I

24. A tension device for Web rolls comprising: supporting means for a plurality of web rolls to successively mov e feeding position, erned. by the tension oflthe web from the roll in feeding position, and braking devices for the rolls movable into and out of'operative relation with the controlling devices by movement of the supporting means.

25. A tension device for web rolls comrising: supporting means for a plurality of Web rolls to successively move said rolls into feeding position, controlling devices governed by the tension of. the web from the roll in feeding position, and a plurality of braking devices, one for each roll, movable into and out of operative relation with the controlling devices by movement of the supporting means. A I

26. A tension device for web rolls comprising: supporting means, having a plurality of ble to successively move said rolls into feeding position, controlling devices governed-by the tension of the Web from the roll in feed i'ng position, and a plurality of braking devices for the rolls, one on each arm of the support, to be moved into and out of operative relation with the controlling devices by rotation of the support.

27. A web tension'device comprising: a rotatable supporting means carrying a plurality of web rolls, a brake for each roll, a plurality of brake rods on said supporting means, and a centrally disposed actuating member controlled by the tension of a web and in turn acting to control said brake rods.

28. A web tension device comprising: a rotatablesupporting means carrying a plural ity of web rolls, a

brake for each roll, a

the web from said rolls into controlling devices govarms each carrying a web roll, rotata plurality of brake rods on said supporting means, and a non-rotating centrally disposed actuating member to successively coact with said brake rods as the supporting means are rotated.

29. A web tension device comprising: a rotatable supporting means carrying a plurality of Web rolls, a brake for each roll, a plurality of brake rods on said supporting means, a centrally disposed actuating member to-control said brake rods, and a controlling member governed by the tension of a feeding Web for adj usting the position of the actuating member.-

rality of web rolls, a brake for each roll, a plurality of brake rods on said supporting means, a non-rotating cen 30. A web tension device comprising: a; rotatable supporting means carrying a plurally disposed ac' w tnating member to successively coact with said brake. rods as the supporting means are rotated, a controlling member mounted independently of the support, and a connection between the controlling member and the actuating member.

- 31. A web tension, device comprising: a rotatable supportin" means carrying a plurality of web rolls, 'a brake for each roll, a plurality of brake rods on said supporting means extending outwardly from the center thereof, and a centrally disposed actuating member controlled by the tension of a Web and in turn acting to control said brake rods.

32. A web tension device comprising; a rotatable supporting means, a plurality E arms carried by said supporting means, each arm carrying a web roll, a brake for each roll, a brake rod on each arm, and a central-. 1y disposedactuating member controlled by the tension of a web and in turn acting to coact with said brake rod.

33. A web tension devicecomprising; a

rotatable-supportin means, a plurality of arms carried by sai supporting means, each arm carrying a web roll, a brakefor each roll, a brake rod on each arm, and a non-rotating centrally disposed actuating member to successively coactwith said brake rods as the supporting means are rotated.

34. A web tension-device comprising: a rotatable supporting means, a plurality of arms carried by said supporting means, each arm carrying a web roll, a brake for each roll, a brake rod on each arm, a centrally disposed actuating member to coact with said brake rod, and a controlling member governed by the tension of a feeding web for lzgdjusting the position of the actuating mem- 35. A web tension device comprising: a rotatable supporting means, a plurality of arms carried by said supporting means, each arm carrying a web roll, a brake for each roll, a brake rodon each arm, a non-rotating centrally disposed actuating member to successively coactwith said brake rods as the supporting means are rotated, a controlling member mounted independently of the support, and a connection between'the controlling member and the actuating member.

Signed at 'Plainfield in the county of Union and State of New Jersey this-th day of September, 1924.

DAVID J. soor'r. 

